InitLogEntry: Initialize Log for Each Trade
In TickExec: Execution Functions for Tick Data Back Test

This function should only be called buy 'MarketBuy', 'MarketSell', 'LimitBuy' or 'LimitSell', not by users.

1 2	InitLogEntry(dateIn, ticker, capital, timeIn = NA, execVol = 0, execQuant = 0, avgPrice = NA, depthIn = NA)

`dateIn`	date of the trade.
`ticker`	ticker for traget instrument, characters or numbers are both acceptable.
`capital`	amount of money wanted to fully invested on the instrument.
`timeIn`	The time when the trade was first executed.
`execVol`	executed volume, in shares.
`execQuant`	executed quantities, in dollars.
`avgPrice`	average price achieved the the trade.
`depthIn`	the level of ask prices that trade had reached. 0 for limit orders.